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Chapter 22
This table contains information on the sample design pertinent to the estimation of the model.
There is one case per subject, and all 5,687 cases are used in the analysis.
The sample represents less than 2% of the entire estimated population.
The design requested 4 strata and 5 units per strata for a total of 20 units in the first stage of the design. The sampling design degrees of freedom are estimated by 20−4=16.
Tests of Model Effects
Figure
Tests of model effects
In the proportional hazards model, the significance value for the predictor age is less than 0.05 and, therefore, appears to contribute to the model.
Test of Proportional Hazards
Figure
Overall test of proportional hazards
Figure
Parameter estimates for alternative model
The significance value for the overall test of proportional hazards is less than 0.05, indicating that the proportional hazards assumption is violated. The log time function is used for the alternative model, so it will be easy to replicate this
Adding a Time-Dependent Predictor
ERecall the Complex Samples Cox Regression dialog box and click the Predictors tab.
